My wife and I have been riding a Cannondale tandem for about a year. I have nothing but the highest regard for it. Smooth riding, not at all rough like some people say about aluminum. Not flexy, either, like a couple of the tandems we tried out. Given the fact that tandems in general tend to handle like a bus, the 'dale feels quite nimble. Also fairly light, which never hurts.

The tandem really worked out well for both of us. On individual bikes, she was a lot slower than I, whereas on the tandem, we set a slightly faster pace than I normally ride on a single bike. You really get to know your spouse on a tandem.

We ended up buying a used Suntour/Shimano equipped Cannondale for $1k. Very handsome in its metallic dark blue color. Been thinking about selling it and buying a larger framed Cannondale (I'm 6'3", really could stand a large frame in the front) , so if you live near KY and are still looking for a used tandem, drop me a line.